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Re: Primary Supports - Ball Cutter Question
Original poster: Ed Phillips <evp-at-pacbell-dot-net>
"J & L Industrial Supply in Chicago carries them.
We use these ball cutters and usually cut our grooves approx 80% x dia.
copper tubing. They snap in clean at this depth.
If the depth is 80% of the ball diameter that would mean the surface
slot was smaller than the size of the "tunnel" formed from the cut,
making the maching a wee bit difficult. Do you mean that you use a ball
diameter larger than that of the tubing, or if not, how do you go about